Carboxymethyl Cellulose (CMC) yog ib tug viscosity-nce tus neeg sawv cev lug siv nyob rau hauv drilling kua thiab muaj zoo solubility ntawm dej thiab thickening nyhuv.
1. Txhim kho viscosity thiab shear thinning zog
CMC tsim cov tshuaj uas muaj viscosity siab thaum yaj hauv dej. Nws cov saw hlau molecular nthuav dav hauv dej, ua rau muaj kev sib txhuam sab hauv ntawm cov kua dej thiab yog li ua kom cov viscosity ntawm cov dej drilling. High viscosity pab nqa thiab tshem tawm cuttings thaum lub sij hawm drilling thiab tiv thaiv cuttings los ntawm accumulating nyob rau hauv qab ntawm lub qhov dej. Tsis tas li ntawd, CMC cov kev daws teeb meem nthuav tawm cov khoom tawg, uas yog, cov viscosity txo qis ntawm qhov siab shear, uas yuav pab kom cov kua dej ntws tawm hauv siab shear zog (xws li nyob ze ntawm lub laum me ntsis) thaum qis shear tus nqi (xws li nyob rau hauv lub annulus). ). tuav lub siab viscosity kom zoo tshem tawm cov txiav.
2. Txhim kho rheology
CMC tuaj yeem txhim kho rheology ntawm cov kua dej drilling. Rheology hais txog qhov deformation thiab ntws cov yam ntxwv ntawm cov kua hauv qab kev ua ntawm sab nraud quab yuam. Thaum lub sij hawm drilling txheej txheem, rheology zoo tuaj yeem xyuas kom meej tias cov dej drilling muaj kev ua haujlwm ruaj khov nyob rau hauv qhov sib txawv siab thiab kub. CMC txhim kho drilling efficiency thiab kev nyab xeeb los ntawm kev hloov cov qauv ntawm cov dej drilling kom nws muaj qhov tsim nyog rheology.
3. Txhim kho av nkos ncuav mog qab zib zoo
Ntxiv CMC rau cov dej drilling tuaj yeem txhim kho qhov zoo ntawm cov ncuav mog qab zib. Mud ncuav mog qab zib yog ib tug nyias zaj duab xis tsim los ntawm drilling kua nyob rau hauv lub drilling phab ntsa, uas plays lub luag hauj lwm ntawm sealing pores, stabilizing lub zoo phab ntsa thiab tiv thaiv drilling kua poob. CMC tuaj yeem tsim lub ncuav mog qab zib tuab thiab tawv av, txo cov permeability thiab lim poob ntawm cov av nkos ncuav mog qab zib, yog li txhim kho qhov ruaj khov ntawm cov phab ntsa zoo thiab tiv thaiv kom tsis txhob muaj kev sib tsoo thiab tawg.
4. Tswj lub lim tsis poob
Kev poob dej yog hais txog kev nkag mus ntawm cov theem ua kua hauv cov kua dej drilling rau hauv cov pores tsim. Kev poob dej ntau dhau tuaj yeem ua rau tsis muaj kev ruaj ntseg ntawm phab ntsa dej thiab txawm tias lub tshuab tawg. CMC tswj tau cov kua dej tsis zoo los ntawm kev tsim cov kua dej khov rau hauv cov kua dej drilling, ua kom cov viscosity ntawm cov kua thiab ua kom qeeb ntawm qhov nkag mus ntawm cov kua theem. Tsis tas li ntawd, lub ncuav mog qab zib zoo tshaj plaws uas tsim los ntawm CMC ntawm phab ntsa zoo ntxiv tiv thaiv cov dej tsis zoo.
5. Kub thiab ntsev tsis kam
CMC muaj qhov kub thiab txias thiab ntsev tsis kam thiab tsim nyog rau ntau yam kev tsim kho. Nyob rau hauv qhov kub thiab txias ib puag ncig, CMC tseem tuaj yeem tswj hwm nws cov viscosity-nce ntxiv kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm cov dej drilling. Qhov no ua rau CMC tau siv dav hauv qhov chaw huab cua xws li qhov dej tob, qhov dej kub kub, thiab dej hiav txwv drilling.
6. Kev tiv thaiv ib puag ncig
Raws li ib tug natural polymer khoom, CMC yog biodegradable thiab ib puag ncig tus phooj ywg. Piv nrog rau qee cov hluavtaws polymer tackifiers, CMC muaj kev ua haujlwm zoo ib puag ncig thiab ua tau raws li cov kev xav tau ntawm kev lag luam roj av niaj hnub rau kev tiv thaiv ib puag ncig thiab kev txhim kho kom ruaj khov.
Carboxymethylcellulose (CMC) plays ntau lub luag hauj lwm raws li ib tug viscosity-nce tus neeg sawv cev nyob rau hauv drilling kua. Nws txhim kho kev ua tau zoo ntawm cov dej drilling thiab ua kom muaj kev vam meej ntawm cov txheej txheem drilling los ntawm kev ua kom cov viscosity thiab shear dilution, txhim kho rheology, txhim kho av nkos ncuav mog qab zib zoo, tswj cov kua dej poob, kub thiab ntsev, thiab kev tiv thaiv ib puag ncig. Daim ntawv thov ntawm CMC tsis yog tsuas yog txhim kho kev ua haujlwm drilling thiab kev nyab xeeb, tab sis kuj txo qhov cuam tshuam ib puag ncig. Nws yog ib qho tseem ceeb thiab tseem ceeb ntawm cov dej drilling.
Post lub sij hawm: Lub Xya hli ntuj-22-2024